Pferd Carbide Bur - Ball Shape, DBL Cut 7/16'' x 3/8'' x 1/4'' Shank - SD-4 (EDP 24572) Pferd Sale! from 2624 /per Qty. Add to Cart This item is a recurring or deferred purchase. By continuing, I agree to the cancellation policy and authorize you to charge my payment method at the prices, frequency and dates listed on this page until my order is fulfilled or I cancel, if permitted. This item is currently on backorder but you can still purchase it now and we'll ship as soon as more become available. Universal Line SD-4 Premium Grade Carbide Burr, 7/16 x 3/8 x 1/4, Ball shape, Double Cut SKU:PFE 24572